quasar | 5eef436f510c0d49d022b096d0717b75cf35e93917dbb5c632c83bf66d4cbb16

General

Target

Uni.exe
Size

409KB
MD5

885cfc4fc32053f0dc1cb8dbf50b8c7c
SHA1

9ea9a3529c159ace497a8bf2af5364004a019ba8
SHA256

5eef436f510c0d49d022b096d0717b75cf35e93917dbb5c632c83bf66d4cbb16
SHA512

2052781f4e56d8db075040d0bc0638be8a529bbdcfe765025ee5351c045ce8a570283c83bbee7f94aac3c913f0e5ba841e9a14a6a3349a097d59ff0c1b2d6f95
SSDEEP

6144:kMg2pJAJcC0B6gMBZ5T/cw+/Ew2azbs69yS79RII2ir7dO1sR:TpyJcC+7MBZ5T/O/ESxySBV2i3g1sR

Score

10^/10

quasar seroxen spyware trojan

Malware Config

Extracted

Family

quasar

Version

3.1.5

Botnet

SeroXen

C2

releases-towards.gl.at.ply.gg:56527

Mutex

$Sxr-rpL8EItHN3pqIQQVy2

Attributes

encryption_key
hmoGJBcviPbEpJOEXtE4
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
SeroXen
subdirectory
SubDir

Signatures

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/4824-1-0x0000000000710000-0x000000000077C000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar

Executes dropped EXE 1 IoCs

Processes:

Client.exe

pid process

4428 Client.exe
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

1 ip-api.com
Creates scheduled task(s) 1 TTPs 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exeSCHTASKS.exeschtasks.exe

pid process

3592 schtasks.exe
5108 SCHTASKS.exe
4816 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Uni.exeClient.exe

description pid process

Token: SeDebugPrivilege 4824 Uni.exe
Token: SeDebugPrivilege 4428 Client.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Client.exe

pid process

4428 Client.exe

pid	process
4428	Client.exe

flow	ioc
1	ip-api.com

pid	process
3592	schtasks.exe
5108	SCHTASKS.exe
4816	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	4824	Uni.exe
Token: SeDebugPrivilege	4428	Client.exe

pid	process
4428	Client.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

Uni.exeClient.exe

description	pid	process	target process
PID 4824 wrote to memory of 3592	4824	Uni.exe	schtasks.exe
PID 4824 wrote to memory of 3592	4824	Uni.exe	schtasks.exe
PID 4824 wrote to memory of 3592	4824	Uni.exe	schtasks.exe
PID 4824 wrote to memory of 4428	4824	Uni.exe	Client.exe
PID 4824 wrote to memory of 4428	4824	Uni.exe	Client.exe
PID 4824 wrote to memory of 4428	4824	Uni.exe	Client.exe
PID 4824 wrote to memory of 5108	4824	Uni.exe	SCHTASKS.exe
PID 4824 wrote to memory of 5108	4824	Uni.exe	SCHTASKS.exe
PID 4824 wrote to memory of 5108	4824	Uni.exe	SCHTASKS.exe
PID 4428 wrote to memory of 4816	4428	Client.exe	schtasks.exe
PID 4428 wrote to memory of 4816	4428	Client.exe	schtasks.exe
PID 4428 wrote to memory of 4816	4428	Client.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\Uni.exe
"C:\Users\Admin\AppData\Local\Temp\Uni.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4824

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Uni.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:3592

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4428

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:4816

C:\Windows\SysWOW64\SCHTASKS.exe
"SCHTASKS.exe" /create /tn "$77Uni.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\Uni.exe'" /sc onlogon /rl HIGHEST
2⤵
- Creates scheduled task(s)
PID:5108

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

Filesize
409KB

MD5
885cfc4fc32053f0dc1cb8dbf50b8c7c

SHA1
9ea9a3529c159ace497a8bf2af5364004a019ba8

SHA256
5eef436f510c0d49d022b096d0717b75cf35e93917dbb5c632c83bf66d4cbb16

SHA512
2052781f4e56d8db075040d0bc0638be8a529bbdcfe765025ee5351c045ce8a570283c83bbee7f94aac3c913f0e5ba841e9a14a6a3349a097d59ff0c1b2d6f95

Download Submit
memory/4428-20-0x00000000749B0000-0x0000000075161000-memory.dmp

Filesize
7.7MB

Download
memory/4428-19-0x00000000749B0000-0x0000000075161000-memory.dmp

Filesize
7.7MB

Download
memory/4428-18-0x0000000007100000-0x000000000710A000-memory.dmp

Filesize
40KB

Download
memory/4428-14-0x00000000749B0000-0x0000000075161000-memory.dmp

Filesize
7.7MB

Download
memory/4428-13-0x00000000749B0000-0x0000000075161000-memory.dmp

Filesize
7.7MB

Download
memory/4824-3-0x00000000052A0000-0x0000000005332000-memory.dmp

Filesize
584KB

Download
memory/4824-7-0x00000000064C0000-0x00000000064FC000-memory.dmp

Filesize
240KB

Download
memory/4824-6-0x00000000058B0000-0x00000000058C2000-memory.dmp

Filesize
72KB

Download
memory/4824-5-0x0000000005350000-0x00000000053B6000-memory.dmp

Filesize
408KB

Download
memory/4824-4-0x00000000749B0000-0x0000000075161000-memory.dmp

Filesize
7.7MB

Download
memory/4824-16-0x00000000749B0000-0x0000000075161000-memory.dmp

Filesize
7.7MB

Download
memory/4824-0-0x00000000749BE000-0x00000000749BF000-memory.dmp

Filesize
4KB

Download
memory/4824-2-0x0000000005900000-0x0000000005EA6000-memory.dmp

Filesize
5.6MB

Download
memory/4824-1-0x0000000000710000-0x000000000077C000-memory.dmp

Filesize
432KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads